This is my first winter with studded snow tires (SUOMI W106 A 47-559 (26x1.9)) Had to miss the first heavy snow ride. Rode the next daybut chickened out on glare ice...I don't think these are the tires for that. I used to ride knobby off road tires on this bike before I wised-up for commuting. I used to ride in the snow on the knobbies. These definitely felt better on the snow and non-glare ice than my road tires and from what I remember of the knobbies. Added about 7 minutes to my 9 mile ride, but felt slower and less secure on the dry than the road tires. Can't wait for more snow!